CN-224229405-U - Automatic packing and sealing compressing device for valve rod of stop valve

Abstract

The utility model provides an automatic packing compressing device for a valve rod packing of a stop valve, which comprises a valve body, a protecting device and an extruding device, wherein the protecting device comprises a protecting sleeve, a first sealing sleeve, a sealing ring and a sealing ring, the protecting sleeve is arranged in the valve body, the first sealing sleeve is connected to the surface of the protecting sleeve in a sliding manner, the sealing ring is fixedly connected to one end of the first sealing sleeve, the extruding device comprises an adjusting groove, an extruding spring and the adjusting sleeve, the adjusting groove is formed in the protecting sleeve, and the extruding spring is arranged in the adjusting groove. The utility model provides an automatic packing sealing and compressing device for a valve rod of a stop valve, which seals an extrusion spring by matching a protective sleeve with a first sealing sleeve, a sealing ring and a sealing ring, so that the corrosion of leaked water or other conveying objects to the spring when packing is worn and leaked is prevented, and the service life of the extrusion spring is prolonged.

Inventors

• TIAN HONGWEI
• Ou dan

Assignees

• 苏州科迪流体控制设备有限公司

Dates

Publication Date

20260512

Application Date

20250421

Claims (7)

1. 1. The automatic packing seal compressing device for the stop valve rod is characterized by comprising a valve body (1), a protecting device (2) and an extruding device (3); The protection device (2) comprises a protection sleeve (21), a first sealing sleeve (22), a sealing ring (23) and a sealing ring (24), wherein the protection sleeve (21) is arranged in the valve body (1), the first sealing sleeve (22) is connected to the surface of the protection sleeve (21) in a sliding mode, the sealing ring (23) is fixedly connected to one end of the first sealing sleeve (22), and the sealing ring (24) is fixedly connected to one end of the first sealing sleeve (22); The extrusion device (3) comprises an adjusting groove (31), an extrusion spring (32) and an adjusting sleeve (33), wherein the adjusting groove (31) is formed in the protecting sleeve (21), the extrusion spring (32) is arranged in the adjusting groove (31), and the adjusting sleeve (33) is in threaded connection with the adjusting groove (31).
2. 2. The automatic packing compressing device for the stop valve stem packing according to claim 1, wherein a rotating ring (4) is slidably connected inside the protecting sleeve (21), and the surface of the rotating ring (4) is rotatably connected to one end of the adjusting sleeve (33).
3. 3. The automatic packing and compressing device for the stop valve rod according to claim 2, wherein a fixing sleeve (5) is fixedly connected to the surface of the protecting sleeve (21), and the fixing sleeve (5) is in threaded connection with the surface of the valve body (1).
4. 4. The automatic packing compressing device for the stop valve rod packing according to claim 1, wherein a second sealing sleeve (6) is arranged in the sealing ring (24), and the second sealing sleeve (6) is fixedly connected to the surface of the protecting sleeve (21).
5. 5. The automatic packing and packing compressing device for the stop valve rod according to claim 4, wherein a plurality of sealing grooves (7) are formed in the sealing ring (24), and sealing blocks (8) are slidably connected in the sealing grooves (7).
6. 6. The automatic packing compressing device for the stop valve rod packing according to claim 5, wherein one side of each of the plurality of sealing blocks (8) is fixedly connected to the surface of the second sealing sleeve (6).
7. 7. The automatic packing and compressing device for the stop valve rod according to claim 2, wherein a fixing device (9) is arranged inside the rotary ring (4), the fixing device (9) comprises a mounting groove (91) and a magnet (92), the mounting groove (91) is formed inside the rotary ring (4), and the magnet (92) is fixedly connected inside the mounting groove (91).

Description

Automatic packing and sealing compressing device for valve rod of stop valve Technical Field The utility model relates to the technical field of stop valves, in particular to an automatic packing compressing device for a stop valve rod packing. Background The stop valve is also called a stop valve, and belongs to a forced sealing type valve, so that when the valve is closed, pressure is applied to a valve clack to force a sealing surface not to leak, an opening and closing part of the stop valve is a plug-shaped valve clack, the sealing upper surface is a plane or a sea conical surface, the valve clack moves linearly along the center line of a valve seat, and the valve rod moves in a lifting and rotating rod type can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The packing of the stop valve is a part for sealing a gap between the valve rod and the valve cover so as to prevent medium leakage, and the sealing automatic pressing device is used for pressing the packing to ensure the sealing performance between the valve rod and the packing. The existing automatic sealing pressing device is generally composed of a spring, a spring seat, a packing gland and the like, the spring is installed above the packing gland and fixed through the spring seat, the elasticity of the spring acts on the packing gland to enable the packing gland to apply downward pressure to packing, but the packing is worn along with the use of the packing, leakage is caused, leaked water or other conveying objects erode the spring, the performance of the packing gland in use is affected, and the service life of the packing gland is prolonged. Therefore, it is necessary to provide an automatic packing and packing compressing device for a valve rod of a stop valve to solve the above technical problems. Disclosure of utility model The utility model provides an automatic packing compressing device for a valve rod packing of a stop valve, which solves the problem that the existing leakage can erode a spring to influence the performance of the spring in use. In order to solve the technical problems, the utility model provides an automatic packing compressing device for a valve rod packing of a stop valve, which comprises a valve body, a protecting device and an extruding device; The protection device comprises a protection sleeve, a first sealing sleeve, a sealing ring and a sealing ring, wherein the protection sleeve is arranged in the valve body, the first sealing sleeve is connected to the surface of the protection sleeve in a sliding mode, the sealing ring is fixedly connected to one end of the first sealing sleeve, and the sealing ring is fixedly connected to one end of the first sealing sleeve; The extrusion device comprises an adjusting groove, an extrusion spring and an adjusting sleeve, wherein the adjusting groove is formed in the protecting sleeve, the extrusion spring is arranged in the adjusting groove, and the adjusting sleeve is in threaded connection with the adjusting groove. Preferably, a rotating ring is slidably connected inside the protective sleeve, and the surface of the rotating ring is rotatably connected to one end of the adjusting sleeve. Preferably, the surface of the protecting sleeve is fixedly connected with a fixing sleeve, and the fixing sleeve is in threaded connection with the surface of the valve body. Preferably, a second sealing sleeve is arranged in the sealing ring and is fixedly connected to the surface of the protective sleeve. Preferably, a plurality of sealing grooves are formed in the sealing ring, and sealing blocks are slidably connected in the sealing grooves. Preferably, one side of each of the plurality of sealing blocks is fixedly connected to the surface of the second sealing sleeve. Preferably, the inside of swivel becket is provided with fixing device, fixing device includes mounting groove and magnetite, the mounting groove set up in the inside of swivel becket, magnetite fixed connection in the inside of mounting groove. Compared with the related art, the utility model has the following beneficial effects: The utility model provides an automatic packing sealing and compressing device for a valve rod of a stop valve, which seals an extrusion spring by matching a protective sleeve with a first sealing sleeve, a sealing ring and a sealing ring, so that the corrosion of leaked water or other conveying objects to the spring when packing is worn and leaked is prevented, and the service life of the extrusion spring is prolonged. Drawings FIG. 1 is a schematic view of a first embodiment of an automatic packing and packing device for a stop valve stem according to the present utility model; FIG. 2 is a schematic cross-sectional structural view of the valve body shown in FIG. 1; FIG. 3 is an enlarged schematic view of portion A shown in FIG. 2; FIG. 4 is a schematic diagr